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Q & A Security · August 10, 2026

Can a shared IP get my domain blacklisted?

Yes. Shared hosting and shared IP ranges mean that if another tenant sends spam, the IP’s reputation affects everyone on that range. Many blacklists list IP addresses, not domains — if your domain resolves to a blacklisted IP, your email is affected. Check both your domain and your mail server’s IP.

Read the full guide
What Is a Domain or IP Blacklist? How Blocklists Work
Blacklists are real-time databases used by email servers, browsers, and firewalls to block traffic from known bad actors. If your domain or IP is listed — even by mistake — your emails bounce and users see security warnings.
Related questions
Are all blacklists equally important? Does having DMARC prevent blacklisting? How long does it take to get removed from a blacklist? What is a DNS-based blacklist (DNSBL)?